A sample of soil is mixed with water and allowed to settle. The clear – InterviewSolution

1.	A sample of soil is mixed with water and allowed to settle. The clear suspended solution turns the pH paper yellowish- orange. Which of the following would change the colour of this pH paper to greenish-blue? (a) Lemon juice (b) An antacid (c) Common salt (d) Vinegar
Answer» (b) An antacid

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